Mask



March 7, 1933. KOENlG r AL 1,900,651

- MASK Filed Oct. 19, 1931 3 Sheets-Sheet l L. R. KOENIG ET AL MASK ' March 1, 1933.

Filed Oct. 19, 1931 5 Sheets-Sheet 2 March 7, 1933. L. R. KOENIG Er AL MASK v Filed 00's., 19, 1931 3 Sheets-Sheet 105 FIGS.

Patented Mar. 7, 1933 I I 630V, m mums: 3. WOLF, 01' mm,

morn a. 301mm, or 1 masons:

I ms:

Application fled October is. m1. mm m. seam.

This invention relates to masks, and with re ard to certain morespecific features, to

ad ustable, photographic masks and the like.

Among the several objects of the invention may be noted the Provision of 'a' mask which ensures any one o predetermined relationships between the edges of a piece of paper and the edges of the picture which is to ap ear thereon; the provision of an article of t c class described which, with quite simple elements, permits of etfecting a large number .of desired combinations; the rovision of a photographic mask which, a r preparation for an exposure,'functions asa unit with the sensitized paper which is to' be masked, so that the paper with its mask may be adjusted with respect to a projected beam from an enlarging camera so as to apply to the paper on y desired parts of the projection; and the provision of an article of this class which may easily be made from paper or the like and which can be sold at a rice which is attractive to the user and pro table to the manufacturer. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of,

parts which will be exem lified in the structure hereinafter describe and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, in which are illustrated several of various possible embodiments of the invention,

Fi 1 is a perspective view showing theuse one form of the invention in connection with an enlarging projector;

Fig. 2 is a plan view of a developed print obtained from the projection illustrated in Fig. 1; I p

ig. 3 is a plan view of a development of another form of the invention;

Fig. 4 is a perspective view showing the development 0 Fig. 3 with adhesiveapplied thereto and in the course of being folded into a osition to form an envelope ilg. 5 is a perspective view showin the enve ope resulting from the procedureallus- 'a great numberof proper trated in Fig. 4, said Fig. 5 showing the envelope being loaded with a piece of sensitized pa r;

ig. 6 is a view similar to Fi 5 after the sensitized paper has been loa ed and the mask adjusted for providing a resulting symmetrically arranged picture;

Fig. 7 is a view similar to Fig. Qshowing the mask arranged to effect a resulting asymmetrically arranged picture.

Fig. 8 is a developmentof another alter-- nagve form of the inventidn: h

.ig. 9 isa perspectiveview s owing a partial assembly of the Fi 8 form; and,

Fig. 10 is a view simi ar to Fig. 9, showin a completed assembly.

gimilar reference characters indicate correspondin views of t e drawings.

Referring now more particularly to Fig. 1, there is diagrammatically shown at numeral 1 a 'projecting'camera adapted to project an image 3 toward a table 5 or'the like, said ima e 3 being illustrated by shaded stippling. his ima e 3 is projected upon sensitized pa er which is held down by a glass holding p ate 11 through which the projected beam passes. In making the projection 1 it is often desirable to mask out part of image and at the same time place the image in a predetermined, desirable location with respect to the edges 7 ofthe sheet 9 of sensitlzed paper (see Fig. 2).

Several difiiculties enter into the problem when the ordinary masks are used. One of these is thata great number of masks are required, unless a mechanical masking machlne is used, and the latter is ex ensive. Second, grantin that a desirable s ape of mask is availab e, it is difiicult to obtain a proper relationship between the edges 7 of the sensitized paper -.9 and the edges of the opening in the mask, because the sensitized paper is located behind the quite often opaque masks, and even though the mask is translucent, it is difiicult to judge or place by measurement the two relatively movable pieces. The tendency of sensitized paper to curl at the edges. multiplies the-difliculties. Third, the ordinary met ods, of masking do parts throughout the several 'not provide a light, fiat, integral structure of which the sensitized paper and the mask are I a part and which after assembly of the paper We overcome all of the above objections and futhermore provide a device which maintains a sharp line of demarcation between the projected picture 5v and the blank margin thereabout.

The present invention provides a unit in which the sensitized paper is definitely positioned in the mask with its edges in a predetermined relationship with respect to the resulting opening for receiving the rejected ima e, this being .done by the gui ing action 0 the corners of the mask. Also, the unit may be taken as a whole and laid down on the projecting board 3 and adjusted to the desired positioning of the opening with respect to the ima e 5. The glass 11 is then ap lied to hold the positioning desired.

fter the projection has been made, the envelopes are unloaded, the paper developed and the result is shown in Fig. 2. The margins of the mask, which is generally similar to an envelope, function in connection with the backs of the mask as ,accurate aligning guides. No' thumb tacks, paste, strips, orother extraneous paraphernalia are necessary and the savin in tlme in arranging the masks isconsi erable.

In Figs. 3 to 7 is shown a preferred form of the invention, embodying the above principles in a single envelope which is adapted to be manufactured from a single blank thus cutting down the expense. The embodiment shown in Figs. 3 to 7 has the added advantage of being adapted to effect symmetrical or asymmetrical predetermined positioning of the picture on the sensitized paper. 'Referring. to said Figs... 3 to 7, numeral 61 refers to a development'made from a suitable material adapted to be creased and scored and folded, such as a heavy weight paper or light cardboard, either plain or acked by suitable cloth webbin attached thereto and preferably opaque to 'ght rays. The development 61 comprises. a central panel 63 which is adapted later to form the back of the envelope which is to result from the development. The development also comprises side panels 65 and 67, the latter panel carrying an upper flap 69 and a lower tongue 71.

In accordance with the teachin s above made herein, the panel 65 is provi ed .with fixed minimum sideward. margins 73 and the panel 67 is provided with fixedendwise, minimum margins 75.

Themargins 73 of the panel are relieved from the central portion of the panel by means of incisions 77, the central portion 65 of the panel 65 then comprising two adjust- "tized paper 9,

able marginal flaps 79 which are relieved from one another by an incision 81, said incision 81 connecting the incisions 77. These adjustable marginal flaps 79 are laterally scored as indicated at numerals 83, the scoring being such as to provide means for hinging the marginal flaps at any one of the predetermined lines at which a scoring appears.

The panel 67 is arranged so that an analogous construction is effected at right angles to the one described in connection with the panel 65. To particularize, the endwise minimum margins 75 are relieved from the central portions 67 by means of incision 85, the latter being centrally connected by means of an incision 87 to form lateral marginal flaps 89 which are scored as indicated at numeral 91, the scoring 91 being at right angles to the scoring 83 on the panel 65.

The last score in the groups 83 and 91 are at minimum marginal distance from the edges of the respective panels 65 and 67 for purposes which will appear.

' The panels 63, 65 and 67 are hinged to one another along score lines 93 so that, as indicated in Fig. 4 the panel 65 may be folded over against the anel 63 and then the panel 67 folded over the previously folded panel '65. At this stage, or in the Fig. 3 stage of the operation, a'dhesiveyas'indicated at numeral 95, is applied to those faces of the marginal regions which are juxtaposed so that upon folding said'regions they .may' be attached. However, the adhesive is not permitted to position itself between the panels 65 and 63, nor to impede any hinging movement of the flaps 7 9 or 89, nor the relative movement of any of the parts of said flaps along the score lines 83 or 91. Adhesive is also placed on the tongue 71 which is made to enclose panels panel 63. The flap 69 is left free of adhesive.

Fi s. 5 to 7 show the resulting envelope whic is adapted'to receive a piece of sensithe edges of which after insertion become positioned under the minimum mar "nal re ons 73, 75, these acting alsoas gui es to e ect entry. If exposurev is made under these conditions and the flaps 79 and 89 opened wide, a minimum symmetrical margin will be effected. I

If it be desired to have -a larger margin,

for example that illustrated by Fig. 6, the

flaps 79 are hinged along JthG pictures. In Fig. 6, theresultingpi cture I Will have endwise margins which: areEw id-e than the longitudinal margins but the pic suitably chosen ones of the score lines 83, as illustrated, and the 105 63 and 65 and is attached to the back of said I ,ture will be symmetricallylarranged on the pa er.

n Fig. 7 is shown ,an adjustment for an asynm'ietrically arran d picture on the sensitized paper. Accor ing to this adjustment, one of the flaps 7 9 is folded short along a suitable score line, thus effecting a wide margin as indicated at numei'al 97; whereas the other flap 79 is folded long, as indicated at numeral 99, so as to form a narrow endwise margin. One of the flaps 89 is folded longas indicated at numeral 101 and the other is folded short as indicated at numeral 103. It will be, understood that in connection with Figs. 5 to 7 that after the adjustment to Figs. 6 and 7 are made, theloaded unit is adjusted in position under the camera'and a glass plate such as 11 is desirably laid down on the envelope (sce Fig. l) with its included sensitized paper and thus maintain the assembl flat, although the glass plate 11 is not abso utely necessary with some forms of material used for the envelope. I

From the above it will be seen that a great number of adjustments of margin may be made with minimum complication and with maximum accuracy in the final roduct.

The described embodiment of t e invention has certain important advantages accruing from the fact that an asymmetric arrange ment of exposure may be made. Furthermore, there is only one envelope to handle 1n making an exposure. This envelope has all of the characteristics of portability and adjustability after loading that the previously described form has. It also has the advan tage that the number of combinations of margin lines is greatly augmented.

Figs. 8 to 10 show another modification which is adapted to accommodate various sizes of paper to be margined and having a i more compact form. F ig. 8 shows the development which comprises a rectangular 105 having sets of lateral score lines 107 and sets of cndwise score lines 109, the two sets of score lines crossing one another at points such as 111. The areas where the score lines cross may be eliminated, but their inclusion is advantageous from the viewpoint of simplicity and ruggedness of structure as well as providing for a plurality of sheets to be accommodated.

The interior score lines'108 and 110, indicated by hatching on the development, are

adapted to fit one size of paper and the second set of score lines outward from said inner set, indicated by numerals 112, 114 and by hatching, accommodate another size of v paper, and this ability to accommodate various sizes of paper may be carried out indefinitely by making each successive rectangular arrangement equal to the next size of paper which it is desired to accommodate.

'lho enclosing or envelope form in this embodimcnt is attained after the sensitized paper is applied, such as, for instance, applying the smal est'size of paper 116 to the smaller hatched area. Then, as indicated in Fig. 9, the scored portion may be folded over and back to formgmarginal regionson the paper and then, as indicated in Fig. 10, the endwise portions may be folded over and back to complete the margin, the width of margin being as desired "due to the choice ofscore lines available for back folding.

This form of the invention has the advantage that it comprises a single sheet of paper which, for the manufacture of the mask, needs only to be scored. It also serves the purpose of masking various sizes of paper. It may also be compactly folded into a thin sheet which may be inserted in the usual package with the sensitized paper as a substitute for the bracing cardboards and the. like now used, thus serving a double function.

inherent in the above described form. Also, the features of portability and adjustability after loading as well as the feature of adjustability of margins to provide either a symmetrical or asymmetrical opening are in herent.

It is intended herein that the term envelope shall apply to the last-named form after it has been applied to the sheet which is to be masked.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained. I

As many changes could be made in carrying out the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. A mask comprising at least one envelope adapted to hold a sheet which is to be masked, the edges of'the envelope substantially accuratel-Iv positioning the edges of said sheet, said enve ope having an opening, and means associated with said envelope for varying the size-of said opening, said last-named means comprising flaps adjacent to said opening and means on said flaps whereby their marginal effects may be adjusted.

2. A mask comprising an enveloping means adapted to receive a sheet, said enveloping means having an opening exposing said s eet, lateral and endwise flaps hinged adjacent to said opening and score lines on said flaps whereby they may be arranged to form adjustable marginal coverings over said sheet.

3. A mask comprising an enveloping means adapted to receive a sheet, said enveloping All of the advantages of the alignment are means having an opening exposing said-sheet,

said opening and score lines on said flaps whereby they may be arranged to form adjustable marginal coverings over said sheet,

the score lines of the respective flaps inter- 5 sectin one another.

4. K mask comprising an enveloping means having a back, foldable portions on said enveloping means adapted to accommodate various sizes of sheets. to hold the same in pre- 10 determined positions, lateral and endwise flaps associated with said foldable regions, and score lines on saidflaps whereby'theymay be adjustably folded over said sheet.

5. A mask comprising an enveloping means 1 adapted to be folded from an uncut rectangular sheet, said sheet having a plurality of lateral and endwise score lines, at least some of the combinations of said lateral and endwise score lines fitting predetermined sizes 20 of paper to be masked, the remainder of the score lines being adapted to permit folding over of lateral and endwise portions of the sheet over said paper to form adjustable marginal coverings.

2 6. A mask com rising an enveloping sheet having a back, fo ded regions adapted to receive paper to be masked and align the same, lateral and endwiseflaps adjacent said folded regions, said flaps being scored to permit 29 folding over of adjustable marginal covering portions over said paper, said device comprising a preformed envelope, said envelope j having minimum mar 'nal regions adjacent said olded region 'afipted to function as w guides for placing therein the object to the paper to be masked. v 7. A photographic mask comprising envelopin means adapted to receive and form a movable unit with a sheet of sensitized paper 43 or the like, and hold said sensitized paper in predetermined relationship to said means, and adjustable means associated with said enveloping means for covering the marginal regions of' said sensitized paper, said last- 43 named means comprising a front for said enveloping means having a central opening therein, and bendable, overlapping flaps secured to the edges of said opening.

8. A mask comprisin an enveloping means 59 adapted to receive a s eet, said enveloping means exposing a region of said sheet, and edgewise flaps associated with said enveloping means adapted to establish the confines of said exposed region, and adjusting means i 55 on the flaps adapted to vary the area of said ex osed region.

n testimony whereof, we have signed our names to this specification this 17th day of October, 1931. g LLOYD R. KOENIG.

FREDERICK B. WOLF. 

